BACK BEGAN HURTING DURING A TWO WEEK PERIOD FROM THE WEEK OF 2-5-04 TO 2-11-04. AFTER HIS SHIFT ON THE 11TH HE WENT TO A DOCTOR. THE FOLLOWING MONDAU HE CALLED HIS SUPERVISOR AND TOLD HIM HIS BACK WAS HURTING & HE WAS GOING TO TAKE A FEW DAYS OFF. NEVER INDICATED HE WAS INJURED AT WORK UNTIL 3-1-04.